A New Summer Standard: “Non-Exploding” 5-Way Handy Fan Equipped with Next-Generation Semi-Solid Battery

“Non-Exploding” Summer Innovation: Introducing the 5-Way Handy Fan with Next-Generation Semi-Solid Battery

Y.S.N. Co., Ltd. (Headquarters: Osaka, Japan) has announced the launch of a new handy fan equipped with a next-generation “semi-solid battery.” This innovative product aims to minimize the risk of fire incidents, which have been increasing with the widespread use of conventional handy fans. The company emphasizes “safety” as the primary selection criterion for a device used daily by loved ones.

Background: Escalating Summer Heat and the Hidden Risk of Battery Explosions

Recent years have seen record-breaking heatwaves across Japan, making handy fans an essential item for outdoor activities. However, this increased popularity has unfortunately coincided with a surge in incidents involving the rupture and ignition of lithium-ion batteries. Exposure to scorching sun, impacts inside bags, or accidental drops can lead to critical accidents with traditional liquid lithium-ion batteries.

Driven by a desire to provide not just coolness but also “absolute peace of mind” to its customers, Y.S.N. opted to integrate the semi-solid battery, a technology that challenges conventional norms.

Y.S.N.’s Relentless Pursuit of Overwhelming Safety

Y.S.N. has pursued exceptional safety by not only incorporating the highly secure next-generation “semi-solid battery” but also by implementing a sophisticated, proprietary IC chip. This chip provides comprehensive protection features, including overcharge, over-discharge, over-voltage, over-current, short-circuit, and IC overheating protection. This dual-layered safety approach combines both “physical” and “system” measures.

The product is compliant with the Electrical Appliances and Materials Safety Act (PSE certification), ensuring safe use within Japan. Furthermore, it includes an “accidental activation prevention function” to prevent unintended startup while in a bag. The design meticulously focuses on preventing accidents.

Three Major Advantages of Semi-Solid Batteries in Handy Fans

1. Ultimate Safety: Resistant to Burning and Explosion

Traditional batteries contain flammable liquid electrolytes, but semi-solid batteries utilize a clay-like, “semi-solid” electrolyte. This composition significantly reduces the risk of thermal runaway, ignition, or explosion, even under impact, pressure, or overcharging. Users can rely on it with confidence, even in severe summer conditions.

2. Amazing Stamina: Up to 16 Hours of Continuous Operation

Combining a large 5000mAh capacity with the high energy density characteristic of semi-solid batteries, the fan achieves a maximum continuous operation of approximately 16 hours. This ensures users can stay cool all day, from their morning commute to their evening return home, without worrying about battery depletion.

3. Exceptional Longevity: Four Times More Charging Cycles

Semi-solid batteries offer a longer cycle life and eliminate the risk of liquid leakage. This makes the product a “sustainable fan” that can be used for many seasons, rather than being a single-season disposable item, maintaining consistent performance year after year.

5-Way Versatility for Diverse Scenarios

This product is not just safe; it also offers five versatile usage modes to fit various lifestyles:

• Handheld Style: For carrying on the go.

• Desktop Style: Ideal for office or desk work.

• Neck-hanging Style: Use the included strap for hands-free operation.

• Smartphone Stand: Enjoy cool air while watching videos.

• Mobile Battery: In emergencies, use the 5000mAh capacity to charge your smartphone.

Product Specifications

• Product Name: 5WAY Handy Fan with Semi-Solid Battery (White)

• Model Number: B1-KS001WH

• JAN Code: 4571679742967

• Power Source: USB rechargeable (Type-C)

• Input: DC5V/1A

• Battery Capacity: Semi-solid battery 5000mAh

• Charging Time: Approximately 6 hours

• Continuous Use Time: Weak: approx. 16 hours / Medium: approx. 10 hours / Strong: approx. 7 hours

• Air Volume: 3 levels (Weak/Medium/Strong)

• Product Size: H166 × W79 × D17mm

• Accessories: USB Type-C cable, strap, instruction manual (with warranty)

Availability

Starting mid-April 2026, the product will be sequentially rolled out at major electronics retailers nationwide:

• Joshin (Joshin web exclusive)

• ZOA

• Nojima

• Bic Camera

• Yamada Denki

• Yodobashi Camera

Note: Product availability may vary by store.

About Y.S.N. Co., Ltd.

Established in 1989 and manufacturing and selling products in Osaka since 1997, Y.S.N. Co., Ltd. originally focused on amusement facility manufacturing and sales. The company has since launched a new business dedicated to planning and selling products that fulfill unmet market needs—items that major manufacturers might not release but consumers wish existed. In an era advocating for diversity, the company believes products should also be more innovative and consumer-centric. Recognizing the limitations faced by large corporations, Y.S.N. embraces a mission to lead product development and market expansion as a medium-sized enterprise. For more information, please visit Y.S.N. Co., Ltd..